The group that oversees high school sports in Massachusetts is warning coaches about a 36-year-old New Hampshire man who’s allegedly posing as a woman on Facebook in an effort to obtain photos of young wrestlers.

Robert Gordon Slye, of Danville, N.H., has a history of targeting wrestlers dating back to 2000, along with criminal convictions for stalking, theft, and parole violations, according to Windham, N.H. police Detective Nick Eddy.

Eddy included the information in an advisory that the Massachusetts Interscholastic Athletic Association forwarded to nearly 380 member schools on Tuesday.

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According to the advisory, Windham police learned last month that Slye, posing as a 21-year-old woman named Nicole Grace Smith, contacted Windham High wrestlers via Facebook, Snapchat, and Instagram.

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He swapped phone numbers with one wrestler and received photos of that student’s abdomen and chest area, in exchange for pictures of a female clad in a bikini, the advisory said.

Slye also tried to lure one wrestler into meeting him at the Topsfield Fair and admitted to a detective on Oct. 23 that he contacted high school athletes and obtained photographs under the female alias, Eddy wrote.

He said Slye has a 16-year history of stalking males and females while zeroing in on high school and middle school wrestlers, even showing up at competitions to film the athletes.

Slye pretends “to be a young female on social media, and [entices] young male wrestlers to send him photographs of their abdomen/chest area,” said the alert, which also noted that the serial stalker appears to have “an extensive knowledge of computers.”

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He’s currently banned from all Windham schools and sporting events, and while no charges have been filed, police are investigating his activities, the advisory said. Slye couldn’t be reached for comment.

Eddy said in a follow-up email that the intelligence bulletin was “sent out to spread awareness to schools, parents, and kids in the area in case they come into contact with Slye.”

Richard Pearson, associate director of the MIAA, said in a statement that the group is “very sensitive” to safety issues involving student athletes.

“Given that this individual is targeting a specific group of athletes, in this instance wrestlers, it is incumbent upon all of us to be conscious of the danger it presents,” Pearson said. “We are certainly appreciative of Officer Eddy reaching out to the MIAA office given the close proximity of the New Hampshire schools to many of our schools. The safety of all students is critically important to the 376 member schools of the MIAA.”